package main.resources.controller.dao;

public interface Subject {

	/**
	 * 
	 * @param observer
	 */
	public void registerObserver(Observer observer);
	
	/**
	 * 
	 * @param observer
	 */
	public void removeObserver(Observer observer);
	
	/**
	 * 
	 * @param arg
	 */
	public void notifyObservers(Object arg);
}
